Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Financial Assets Measured at Fair Value on Recurring Basis and Level of Inputs used in such Measurements

The following tables show the Company’s financial assets measured at fair value on a recurring basis and the level of inputs used in such measurements as of September 30, 2021 and December 31, 2020 (in thousands):

	September 30, 2021
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Fair Value Level
Assets
Cash and cash equivalents:
Cash	$	5,307	$	—	$	—		$	5,307
Money market funds		26,848		—		—			26,848	Level 1
Commercial paper		47,419		—		(2	)		47,417	Level 2
Total cash and cash equivalents		79,574		—		(2	)		79,572
Short-term investments:
Asset-backed securities		18,173		3		—			18,176	Level 2
Commercial paper		111,131		2		(1	)		111,132	Level 2
Corporate debt securities		21,157		—		(5	)		21,152	Level 2
U.S. agency securities		19,659		6		(2	)		19,663	Level 2
U.S. government securities		55,536		3		(4	)		55,535	Level 2
Total short-term investments		225,656		14		(12	)		225,658
Total assets measured at fair value	$	305,230	$	14	$	(14	)	$	305,230

	December 31, 2020
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Fair Value Level
Assets
Cash and cash equivalents:
Cash	$	4,767	$	—	$	—		$	4,767
Money market funds		22,614		—		—			22,614	Level 1
Commercial paper		41,145		—		(1	)		41,144	Level 2
Total cash and cash equivalents		68,526		—		(1	)		68,525
Short-term investments:
Commercial paper		25,470		—		—			25,470	Level 2
Corporate debt securities		29,576		—		(8	)		29,568	Level 2
U.S. agency securities		61,436		31		(1	)		61,466	Level 2
U.S. government securities		18,260		1		—			18,261	Level 2
Total short-term investments		134,742		32		(9	)		134,765
Total assets measured at fair value	$	203,268	$	32	$	(10	)	$	203,290